I've not tried this myself but you might be able to find the recipe on the Food Ntwk web site. Rachael Ray made a mushroom sauce for chicken fried steak (an Americana meal) made with different kinds of mushrooms. It was her "improved version" of condensed cream of mushroom soup. It looked great.

Though it's not traditional, I will cut it up in chunks after it has been soaked and make a stir fry with white fungus, wood ears (black fungus), snow pea pods, assorted mushrooms,water chestnuts and any other veggies you like in your stir fry. It's a good way to use it up, otherwise, it will eventually mold.